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A1R0Q9 (SYI_BORT9) Reviewed, UniProtKB/Swiss-Prot

Last modified April 16, 2014. Version 41. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (2) | Third-party data text xml rdf/xml gff fasta
to top of pageNames·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order

Names and origin

Protein namesRecommended name:
Isoleucine--tRNA ligase

EC=6.1.1.5
Alternative name(s):
Isoleucyl-tRNA synthetase
Short name=IleRS
Gene names
Name:ileS
Ordered Locus Names:BT0833
OrganismBorrelia turicatae (strain 91E135) [Complete proteome] [HAMAP]
Taxonomic identifier314724 [NCBI]
Taxonomic lineageBacteriaSpirochaetesSpirochaetalesSpirochaetaceaeBorrelia

Protein attributes

Sequence length1044 AA.
Sequence statusComplete.
Protein existenceInferred from homology

General annotation (Comments)

Function

Catalyzes the attachment of isoleucine to tRNA(Ile). As IleRS can inadvertently accommodate and process structurally similar amino acids such as valine, to avoid such errors it has two additional distinct tRNA(Ile)-dependent editing activities. One activity is designated as 'pretransfer' editing and involves the hydrolysis of activated Val-AMP. The other activity is designated 'posttransfer' editing and involves deacylation of mischarged Val-tRNA(Ile) By similarity. HAMAP-Rule MF_02003

Catalytic activity

ATP + L-isoleucine + tRNA(Ile) = AMP + diphosphate + L-isoleucyl-tRNA(Ile). HAMAP-Rule MF_02003

Cofactor

Zinc By similarity. HAMAP-Rule MF_02003

Subunit structure

Monomer By similarity. HAMAP-Rule MF_02003

Subcellular location

Cytoplasm By similarity HAMAP-Rule MF_02003.

Domain

IleRS has two distinct active sites: one for aminoacylation and one for editing. The misactivated valine is translocated from the active site to the editing site, which sterically excludes the correctly activated isoleucine. The single editing site contains two valyl binding pockets, one specific for each substrate (Val-AMP or Val-tRNA(Ile)) By similarity. HAMAP-Rule MF_02003

Sequence similarities

Belongs to the class-I aminoacyl-tRNA synthetase family. IleS type 2 subfamily.

Ontologies

Keywords
   Biological processProtein biosynthesis
   Cellular componentCytoplasm
   LigandATP-binding
Metal-binding
Nucleotide-binding
Zinc
   Molecular functionAminoacyl-tRNA synthetase
Ligase
   Technical termComplete proteome
Gene Ontology (GO)
   Biological_processisoleucyl-tRNA aminoacylation

Inferred from electronic annotation. Source: UniProtKB-HAMAP

   Cellular_componentcytoplasm

Inferred from electronic annotation. Source: UniProtKB-SubCell

   Molecular_functionATP binding

Inferred from electronic annotation. Source: UniProtKB-HAMAP

aminoacyl-tRNA editing activity

Inferred from electronic annotation. Source: InterPro

isoleucine-tRNA ligase activity

Inferred from electronic annotation. Source: UniProtKB-HAMAP

zinc ion binding

Inferred from electronic annotation. Source: UniProtKB-HAMAP

Complete GO annotation...

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 10441044Isoleucine--tRNA ligase HAMAP-Rule MF_02003
PRO_1000216252

Regions

Motif48 – 5811"HIGH" region HAMAP-Rule MF_02003
Motif594 – 5985"KMSKS" region HAMAP-Rule MF_02003

Sites

Binding site5971ATP By similarity

Sequences

Sequence LengthMass (Da)Tools
A1R0Q9 [UniParc].

Last modified April 14, 2009. Version 1.
Checksum: 90243AEF3409511A

FASTA1,044122,959
        10         20         30         40         50         60 
MFKKVESKVN FPKIEERILK FWNDNKIFEK SIQQREGCEE FTFYDGPPFA TGLPHFGHFV 

        70         80         90        100        110        120 
PNTIKDIIPR YKTMKGKQVK RYFGWDTHGL PVEYEVEKSL KISGRYEIEK YGIDKFNEEC 

       130        140        150        160        170        180 
RKIVLRYTKE WQKTISRLGR WIDFENNYKT MDTTFMESVW WVFQTLYNKG LIYESYYVLP 

       190        200        210        220        230        240 
YSPKLATPLS NFEVNLGEYK EIHDPSLTIK FKIKDKNEYL LAWTTTPWTL PTNLGIAVGK 

       250        260        270        280        290        300 
DIDYSKIFDK EKDETFIIGT KRLNHYYKDE KAYTVIEQFK GEYIKGIEYE PIFNYFLNQR 

       310        320        330        340        350        360 
DKGAFKIHTA EYVTTDDGTG IVHIAPFGEE DYNILKNNTK TDMITPIDAE CRFTNEVKDF 

       370        380        390        400        410        420 
EGLFVKDADN KIIEKLKSMN LLFKRENFLH RYPFCYRTNS PLIYRPISSW FVNIEAIKEK 

       430        440        450        460        470        480 
LIKSNEQINW MPSHLKKGRF GKWLENARDW AISRNRFWGN PIPVWICSKT GNKICIGSKE 

       490        500        510        520        530        540 
ELERLSGQKV NDLHKDKVDK ITWPSEYGGV YVRTSEVLDC WFESGSMPYA SKHYPFKDKD 

       550        560        570        580        590        600 
NFHNIFPADF IAEGLDQTRG WFYTLTILGT ALFENTAFKN VIVNGLVLSS DGRKMSKSLR 

       610        620        630        640        650        660 
NYTDPMEVIN TFGADALRLY LVMSPVIRAD DLKYSDDGVK DVLKNIIIPI WNAYSFFITY 

       670        680        690        700        710        720 
AIIDKFEPNN NINLHKTNIL DKWIVSEIES LKKILNEEID KYNLTKSIEE LLAFIDKLNN 

       730        740        750        760        770        780 
WYIRRSRRRF WKSENDNDKI DAHETLYYVI KNLMLMLAPF IPFLTEEIYQ NLKTKDEKES 

       790        800        810        820        830        840 
IHLNKYPQAI EKLINIDLEE KMNFIRKVVS IARALRASHN IKIRKPISTI YVVTKDQKEQ 

       850        860        870        880        890        900 
QILNEMKEII LEEINAKEIK IKSNEEELVT YKAKANFREL GSKLGVNMKV GSLEIMKLTN 

       910        920        930        940        950        960 
EDILKIINGN KHIIKINENT YNITLKDIIL ERHERENLKI INEDSVTIGL DALITEELYL 

       970        980        990       1000       1010       1020 
EGLSRELIRK VQNLRKENNF NVSDRIILYI DNSDILKKIT NQFESYIKTE TLTLKIEINK 

      1030       1040 
EKALTNVELD DAIFIKIGIK RWSN 

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References

[1]"The genome sequence of Borrelia hermsii and Borrelia turicatae: comparative analysis of two agents of endemic N. America relapsing fever."
Porcella S.F., Raffel S.J., Schrumpf M.E., Montgomery B., Smith T., Schwan T.G.
Submitted (DEC-2004) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: 91E135.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
CP000049 Genomic DNA. Translation: AAX18150.1.
RefSeqYP_945821.1. NC_008710.1.

3D structure databases

ProteinModelPortalA1R0Q9.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

STRING314724.BT0833.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaAAX18150; AAX18150; BT0833.
GeneID4642651.
KEGGbtu:BT0833.
PATRIC20573411. VBIBorTur92789_0825.

Organism-specific databases

CMRSearch...

Phylogenomic databases

eggNOGCOG0060.
HOGENOMHOG000246403.
KOK01870.
OMADWNLSRS.
OrthoDBEOG644ZM1.
ProtClustDBPRK06039.

Enzyme and pathway databases

BioCycBTUR314724:GJ88-841-MONOMER.

Family and domain databases

Gene3D1.10.730.10. 1 hit.
3.40.50.620. 2 hits.
3.90.740.10. 1 hit.
HAMAPMF_02003. Ile_tRNA_synth_type2.
InterProIPR002300. aa-tRNA-synth_Ia.
IPR002301. Ile-tRNA-ligase.
IPR023586. Ile-tRNA-ligase_type2.
IPR014729. Rossmann-like_a/b/a_fold.
IPR009080. tRNAsynth_1a_anticodon-bd.
IPR013155. V/L/I-tRNA-synth_anticodon-bd.
IPR009008. Val/Leu/Ile-tRNA-synth_edit.
[Graphical view]
PfamPF08264. Anticodon_1. 1 hit.
PF00133. tRNA-synt_1. 1 hit.
[Graphical view]
PRINTSPR00984. TRNASYNTHILE.
SUPFAMSSF47323. SSF47323. 2 hits.
SSF50677. SSF50677. 1 hit.
TIGRFAMsTIGR00392. ileS. 1 hit.
ProtoNetSearch...

Entry information

Entry nameSYI_BORT9
AccessionPrimary (citable) accession number: A1R0Q9
Entry history
Integrated into UniProtKB/Swiss-Prot: September 22, 2009
Last sequence update: April 14, 2009
Last modified: April 16, 2014
This is version 41 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Relevant documents

SIMILARITY comments

Index of protein domains and families

Aminoacyl-tRNA synthetases

List of aminoacyl-tRNA synthetase entries